JPH0929490A - Hydraulic press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydraulic press capable of achieving the pressing by inclining the press without inclining a work, and applying the force directly in the pressing direction on the part to be pressed. SOLUTION: A press 3 is fitted in a vertically turnable manner to the tip side of an arm 2 which is fitted to a base 1 in a vertically rotatable manner. The base 1 and the arm 2, and the arm 2 and the press 3 are respectively connected to each other by hydraulic cylinders 4, 5. The base 1 is movable along the longitudinal direction of the arm 2 by a base moving device 6, and the angle formed by the base 1 and the arm 2, and the angle formed by the arm 2 and the press 3 are adjusted by a first angle adjusting means 7 and a second angle adjusting means 8 respectively. The initial position and the initial posture of the press 3 are controlled by the base moving means 6 and the first and second angle adjusting means 7, 8, and the turning condition of the press 3 can be changed by the expansion/contraction of the hydraulic cylinders 4, 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic press device for drawing and the like, and more particularly to a hydraulic press device capable of working in directions other than horizontal and vertical.

[0002]

PRIOR ART AND PROBLEM TO BE SOLVED BY THE INVENTION Horizontal,
Presses called tilting presses or tilting type presses that can perform processing by tilting to an angle other than vertical are conventionally known, but structurally, one of the fulcrums of the tilting part is fixed and the other is fixed. It was only moved by tilting the inside of a crescent-shaped hole to drop the work under its own weight to make it easier to carry, and it was hardly used due to technological innovation of the carrier. For this reason, when it is necessary to make a hole in the work obliquely, the work is tilted and set in a press for processing. In this case, the work set is handled manually.

Further, in a press system having a highly automated transfer device or the like, an idle station is provided in the middle to rotate a work, or a cam is mounted in a die to convert vertical movement into horizontal movement. Then, processing is performed in an oblique direction. However, when the production mode of high-mix low-volume production has become mainstream as in recent years, it is costly to equip the mold with a cam or to set up an idle station because this will increase the cost of the mold. However, it has become impossible to return to manual work. Therefore, it has been desired to develop a new press working technique suitable for high-mix low-volume production.

The present invention has been made in view of the above point, and the press can be tilted without tilting the work so that the mold can be easily attached, and the pressure can be directly applied in the direction in which the pressurization is desired. An object of the present invention is to provide a hydraulic press device that can perform processing by applying force.

[0005]

In order to achieve the above object, a hydraulic press device according to a first aspect of the present invention vertically presses a press on the tip side of an arm rotatably mounted vertically on a base. It is rotatably mounted, and the base and the arm and the arm and the press are connected by hydraulic cylinders, and the arm and the press are rotationally driven by these hydraulic cylinders to rotate the press. Also, it is possible to control the attitude.

According to a second aspect of the present invention, there is provided a hydraulic press device in which a press is vertically rotatably mounted on a tip end side of an arm rotatably mounted on a base, and between the base and the arm and between the arms. A means for connecting the presses to each other by a hydraulic cylinder so that the arm and the press can be rotationally driven, and moving the base along the longitudinal direction of the arm, and the base and the arm in an initial state. And a second angle adjusting means for adjusting the angle formed by the arm and the press in the initial state. The hydraulic cylinder, the moving means, and the first and second moving cylinders are provided. It is characterized in that the position and posture of the press can be controlled by the angle adjusting means.

Further, the hydraulic press device according to claim 3 is
A rotating device such as a motor or a rotating handle is provided in place of the hydraulic cylinder between the arm and the press.

A hydraulic press device according to a fourth aspect is
Instead of the second angle adjusting means, a rotating device such as a motor or a rotating handle for adjusting the heights of the upper die and the lower die of the press is provided.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a hydraulic press device according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of an embodiment of a hydraulic press device of the present invention at a processing position,
FIG. 2 is an explanatory diagram showing the contents of positioning adjustment of the apparatus of FIG.
3 is a side view of the apparatus of FIG. 1 in a retracted position, and FIG. 4 is a side view of the apparatus of FIG. 1 in a mold replacement position.

The apparatus according to this embodiment is mainly composed of a base 1,
The arm 2, the press 3, the hydraulic cylinders 4, 5 and the base moving device 6, the first angle adjusting means 7 for adjusting the angle formed by the base 1 and the arm 2 in the initial state, and the angle formed by the arm 2 and the press 3. The second angle adjusting means 8 for adjusting the tilt of the press 3 in the vertical direction is variously adjusted to perform the drawing process without tilting the work 9.

In the following description, only the case where the base 1 is installed vertically on the ground will be described, but the present invention is not limited to such an example, and the base 1 is installed horizontally with respect to the ground, for example. It can also be used in the embodiment, and in the present specification, “horizontal” and “vertical” are not with respect to the ground but with respect to the installation direction of the base 1.

The arm 2 is supported at its base end so as to be vertically rotatable around a fulcrum 10 above the base 1, and the fulcrum 1
The rod end of the hydraulic cylinder 4 is connected to the pressurizing point 11 further on the base end side than the supporting position at 0. The hydraulic cylinder 4 has a housing mounted on a bracket 12 provided on the base 1 so as to be vertically rotatable. Therefore, the arm 2 rotates as the rod of the hydraulic cylinder 4 expands and contracts, and when the rod of the hydraulic cylinder 4 is extended, the arm 2 is lowered, and when the arm 2 is extended, the arm 2 is raised. And attitude control.

The lower end of the press 3 is supported so as to be vertically rotatable about a fulcrum 13 on the tip side of the arm 2, and a rod of the hydraulic cylinder 5 is attached to a pressurizing point 15 of a bracket 14 provided at the lower end. The ends are connected. The hydraulic cylinder 5
Inverted L-shaped bracket 16 provided on the upper end of the arm 2
A housing is attached to the so as to be vertically rotatable.
Therefore, as the rod of the hydraulic cylinder 5 expands and contracts, the press 3 rotates, and when the rod of the hydraulic cylinder 5 is extended, the upper side of the press 3 rotates and rises up above the arm 2 and contracts. Then, the arm 2 descends horizontally along the longitudinal direction. Further, the press 3 has a ram 17 and a bolster 18 inside, and an upper die 19 between them.
By placing the lower die 20 and changing the rotation angle, it is possible to perform press working at a required position on the work 7 at a required angle.

The base moving means 6 and the first and second angle adjusting means 7 and 8 adjust the initial position and initial posture of the base 1, the arm 2 and the press 3. The base moving device 6 includes a handle 21, a trapezoidal screw 22, and a nut 2.
3, the handle 21 is rotated to change the screwing degree of the trapezoidal screw 22 and the nut 23, thereby determining the moving amount a of the base 1. The first angle adjusting means 7 is constructed by attaching a bolt 25 to a bracket 24 provided on the upper part of the base 1, and adjusting the tip position of the bolt 25 to determine the angle θ1 formed by the base 1 and the arm 2. It has become. Further, the second angle adjusting means 8 includes a handle 26, a trapezoidal screw 27, and a nut 28. The handle 26 is rotated to change the screwing degree of the trapezoidal screw 27 and the nut 28 so that the trapezoidal screw 27 protrudes from the nut 28. The length is adjusted to determine the angle θ2 formed by the arm 2 and the press 3.

Next, the operation of the apparatus according to this embodiment will be described. First, the base moving device 6 and the first angle adjusting means 7 described above.
And the second angle adjusting means 8 adjusts three points as shown in FIG. 2, and the processing positions x and y and the angle z required for press working are determined by these adjustments. Then, the cylinder 4 is extended, the cylinder 5 is contracted, and the processing position shown in FIG. 1 is taken, so that the press 3 is in an optimum angle state with respect to the processed portion of the work 9 as shown in the drawing.

Next, as shown in FIG. 3, when both the cylinder 5 and the cylinder 4 are contracted, the arm 2 is rotated upward from the state of FIG. 1 and the press 3 is retracted so that the work 9 can be easily transported. Become. Further, as shown in FIG. 4, the cylinder 5
When the cylinder 3 is extended, the press 3 is vertically erected, and the upper mold 19 and the lower mold 20 can be easily exchanged. Of course, in each position and state, a stable state can be maintained by continuously applying force to the base end of the arm 2 and the lower end of the press 3 with the hydraulic cylinders 4 and 5 for a time required for various operations.

FIG. 5 is a side view of the second embodiment of the hydraulic press device of the present invention at the processing position, FIG. 6 is an explanatory view showing the contents of positioning adjustment of the device of FIG. 5, and FIG. 7 is of FIG. FIG. 8 is a side view of the apparatus in the retracted position, and FIG. 8 is a side view of the apparatus in FIG. In the following description, the same or similar parts as those of the previous embodiment will be denoted by the same reference numerals, and overlapping description will be omitted.

This embodiment is provided with an end block 31 for preventing the arm 2 from rotating downward by a predetermined angle or more, instead of the first angle adjusting means 7 for adjusting the angle of the arm 2 with respect to the base 1. 3 includes a rotating mechanism including a handle 32 and a speed reducer 33 in place of the hydraulic cylinder 5 for adjusting an angle formed with respect to the arm 2, and further includes a top die 19 in place of the second angle adjusting means 8. A handle 35, a trapezoidal screw 36, and a nut 37 are provided as the mold height adjusting means 34, and a handle 39, a trapezoidal screw 40, and a nut 41 are provided as the mold height adjusting means 38 of the lower die 20.

That is, in this second embodiment, the handle 3
The rotation of 2 is transmitted through the decelerator 33 and the press 3 is supported by the fulcrum 1
Rotate around 3 to determine angle c in FIG. Further, by rotating the handles 34 and 39, the screwing degrees of the trapezoidal screws 36 and 40 and the nuts 37 and 41 can be changed, and the upper mold 3 and the lower mold 4 can be changed.
The mold heights b1 and b2 are determined by adjusting the respective positions. Further, similarly to the previous embodiment, the handle 21 is rotated to change the screwing degree of the trapezoidal screw 22 and the nut 23,
This determines the movement amount a of the base 1. And
By adjusting these four positions, the processing positions x and y and the angle z required for the press 3 and the concentricity d of the upper die 3 and the lower die 4 can be adjusted. In the present embodiment, although the mold exchange is slightly inferior to the previous embodiment, the mold heights b1 and b2 can be adjusted to avoid the eccentric load, and the repeat accuracy can be improved.

Although the manually operated handle is used in the two embodiments described above, a motor with a speed reducer may be used. However, since the press 3 is located at the mold replacement position infrequently, the manual handle is not troublesome.

[0021]

Since the hydraulic press device according to the present invention is as described above, the conventional die can be used as it is, and the work can be performed in an oblique direction without tilting the work. Unlike the conventional method in which the posture of the work is decided together, the work is handled easily because the press moves according to the work, and the mold can be replaced when it is in the same positional relationship as the conventional press machine, so replacement is easy. The effect is that you can

Further, in the hydraulic press device according to the present invention, it is not necessary to equip the mold with a cam or to provide an idle station, and in maintenance, it is sufficient to manufacture and replace a consumable punch and die. Therefore, there is also an effect that the die cost is lower than that of the current die that requires a cam or the like. Moreover, since the rotation of the arm and the press is driven by the hydraulic cylinder, a large driving force is not required,
It also has the effect of enabling quick and easy mold replacement work.

Further, the hydraulic press device according to claim 3 is
In addition to the common effects described above, there is an effect that the number of hydraulic cylinders can be reduced by one compared with the devices of claims 1 and 2, which can lead to cost reduction and improvement in reliability.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment of a hydraulic press device of the present invention at a processing position.

FIG. 2 is an explanatory diagram showing the contents of positioning adjustment of the apparatus of FIG.

3 is a side view of the device of FIG. 1 in a retracted position.

FIG. 4 is a side view of the apparatus of FIG. 1 in a mold exchange position.

FIG. 5 is a side view of a second embodiment of the hydraulic press device of the present invention at a processing position.

FIG. 6 is an explanatory diagram showing the contents of positioning adjustment of the apparatus of FIG.

7 is a side view of the device of FIG. 5 in a retracted position.

8 is a side view of the apparatus of FIG. 5 in a mold replacement position.

[Explanation of symbols]

 1 base 2 arm 3 press 4, 5 hydraulic cylinder 6 base moving device 7 first angle adjusting means 8 second angle adjusting means 9 work 10, 13 fulcrum 11, 15 pressurizing point 17 ram 18 bolster 19 upper die 20 lower Mold 21, 26, 32, 35, 39 Handle 22, 27, 36, 40 Trapezoidal screw 23, 28, 37, 41 Nut 25 Bolt 31 End block 33 Reducer 34 Upper mold height adjusting means 38 Lower mold Mold height adjusting means

Claims (4)

[Claims] 1. A press is vertically rotatably mounted on the tip side of an arm rotatably mounted on a base, and a hydraulic cylinder is provided between the base and the arm and between the arm and the press. A hydraulic press device characterized by being connected to each other, and enabling the arm and the press to be rotationally driven by these hydraulic cylinders to control the position and posture of the press. 2. A press is vertically rotatably mounted on a tip end side of an arm rotatably mounted on a base, and the base and the arm and the arm and the press are connected by a hydraulic cylinder. And means for enabling the arm and the press to be rotationally driven, respectively, and for moving the base along the longitudinal direction of the arm,
The hydraulic cylinder includes a first angle adjusting means for adjusting an angle formed by the base and the arm in an initial state, and a second angle adjusting means for adjusting an angle formed by the arm and the press in an initial state. Means and first
And a second angle adjusting means for controlling the position and posture of the press, which is a hydraulic press device. 3. The hydraulic press device according to claim 1, wherein a rotating device such as a motor or a rotating handle is provided in place of the hydraulic cylinder between the arm and the press. 4. A rotating device such as a motor or a rotating handle for adjusting the height of the upper and lower molds of the press is provided in place of the second angle adjusting means. Item 2. A hydraulic press device according to item 2 or 3.